Caltrop (Puncture vine) Tribulus terrestris L.
Puncture vine is an annual herbaceous plant of the Zygophyllaceae family. The root is relatively thin, spindly. The stems are numerous (up to 5-10 more) branches, with rare upright hairs, green to brownish, creeping, reaching 1 - 2 m long. The leaves are complex, mantled, consecutive, 3-5 cm long, 1-2 cm wide, with 4-7 pairs of petals that are up to 1 cm long. They are elliptical, slightly asymmetrical, dark green top, whitish green underneath, with white hairs. The flowers are relatively small, single, located in the bosom of the leaves. The fruit after the ripening disintegrates into 5 walnuts. Blooms and fruits in July - October.
It is found in sandy and stony places like a weed in the vineyards, anywhere in the warmer parts of the country.
Use the herbs (Herba Tribulis terrestris) for the babies teeth. Bere July - September. Cut the stems of the plant during flowering.
In folk medicine it is used for blood purification and smear as a diuretic and against constipation.